At the moment I have a black and white texture image (e.g. of a paper texture), and want to turn the white area transparent.
However, simply selecting by colour and making the whitest area transparent gives something that looks a lot worse than the original image.
What I really want is this:
Question: Is there a way to take every pixel with x% blackness and 100-x% whiteness and turn it into a black pixel with x% opacity?